219776781

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{14887}}^1$

素因数の和:14953

約数の個数: 32

約数和(自身を含む): 362076160

約数和(自身を除く): 142299379

約数列:

[1, 3, 7, 19, 21, 37, 57, 111, 133, 259, 399, 703, 777, 2109, 4921, 14763, 14887, 44661, 104209, 282853, 312627, 550819, 848559, 1652457, 1979971, 3855733, 5939913, 10465561, 11567199, 31396683, 73258927, 219776781]

約数ペア:

[(1, 219776781), (3, 73258927), (7, 31396683), (19, 11567199), (21, 10465561), (37, 5939913), (57, 3855733), (111, 1979971), (133, 1652457), (259, 848559), (399, 550819), (703, 312627), (777, 282853), (2109, 104209), (4921, 44661), (14763, 14887)]